About
Capital Backyard Ultra starts in Lorton, Virginia, on March 20, 2027, at 8:00 AM. It is a last-person-standing race on trail: the same loop goes off on the hour, every hour, until a single runner is left, so there is no set distance to enter. Experienced volunteers run the event, with a pavilion for shelter and a kitchen staffed by professional chefs handing out food and smoothies throughout.
Many runners use this format as preparation for bigger goal races, and it rewards discipline over speed. Finish each loop early enough to eat, change and sit for a few minutes, and the hours stay manageable; run them fast and the rest time disappears. The field tends to be experienced and competitive, with a cash prize for the winner, but the atmosphere stays encouraging. Plan for night hours, lighting and a full change of clothes.
Prepare for Capital Backyard Ultra with RunRun
An AI-generated training plan, adjusted every week based on your real sessions. Built around your goal, current level and race date.
- Personalized plan based on your VO2max, history and weekly availability
- Strava and Garmin sync: your sessions are analyzed and the plan adapts
- Target paces, long runs, key sessions: everything is calculated for race day
Races nearby
Other upcoming races around Lorton.
Fall Backyard Burn Trail Run - Laurel Hill
Oct 4, 2026 · Lorton, VA · 2 mi away
5.4 mi · 10 mi
George Washington Patriot Run 5K & 10 Miler
Sep 13, 2026 · Mount Vernon, VA · 7 mi away
10 mi · 3.1 mi
Black Nurses of Southern Maryland Health Fair and Walk/Run
Oct 3, 2026 · Fort Washington, MD · 11 mi away
3.1 mi · 1.5 mi
Team up! 5K
Oct 3, 2026 · Fairfax, VA · 11 mi away
3.1 mi
RUN! GEEK! RUN! 5K & 1-Mile Fun Run
Sep 27, 2026 · Alexandria, VA · 12 mi away
3.1 mi · 1 mi
Latinas Leading Tomorrow (LLT) Reach for the Stars 5K Run/Walk
Sep 13, 2026 · Arlington, VA · 12 mi away
3.1 mi